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Finding the Fourth Proportional to 206.08, 307.70 and 170.08

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Solution

The fourth proportional to 206.08, 307.70 and 170.08 is: 253.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.08 : 307.70 = 170.08 : x
  2. Step 2: Convert to fraction form
    206.08/307.70 = 170.08/x
  3. Step 3: Cross multiply
    206.08x = 307.70 × 170.08
  4. Step 4: Simplify right side
    206.08x = 52,333.62
  5. Step 5: Solve for x
    x = 52,333.62/206.08
  6. Step 6: Final answer
    x = 253.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.